RT Journal Article SR Electronic T1 Portal venous gas and pneumatosis intestinalis JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E175 OP E175 DO 10.1503/cmaj.120219 VO 185 IS 3 A1 Liu, Shung-Wei A1 Huang, Tai-Yu YR 2013 UL http://www.cmaj.ca/content/185/3/E175.abstract AB